Safety-valve.



H. STEINBERG.

SAFETY VALVE.

APPLICATION FILED MAB.. 3, 19.13.

APatented Mar; 31, 1914,

` PATENT; @mea i nanarsrnrunue, or Henri-Nanou, P ENNSS'LVANIA. 1

noanaso.

Bc it known that I; HARRY STEINBERG, a.

v citizen of theiUnited States1 and a resident of Huntingdon, in the 'countv of Hunting-` exact description;-

i This invention'has special -referenceto an improved safety. attachment for hot Vwater boilers and the like. i

The primary object of the invention resides in the provision of a novel form of safety'valve 'designed for attachment to a hot Water boiler, especially those connected with stoves and ranges, and which will serve `the pui-pose'o permitting the escape of excessivesteam pressure when the Water 'reaches a Aboiling point, thus obviatinglexlesions which commonly, occur. Y 'With the-above and' other .objects in view the invention resides in the-combination and" fameter than the diameter of the valve. the

arrangement of parts ltobe hereinafter more fully described and claimed.

ing 'drawingsforming a part ofthis spec-ification, in which likecharacters of -reit'erence indicate corresponding par-ts in all the views, and in Which' Figure 1 is an elevation 'of the improved 'safety attachment or valve applied to a .boiler ,having'the usual connections with a stove; Fig. 2 is an enlarged vertical sectional 4view through the ex'it pipe to 'which the improved valve is attac'zhed; and Fig. 3

"is a 'cross .sectional view taken 'on 'the line 1.3-3'0 Fig'. 2.

In ilhrstrating'the preferred embodiment of the invention, there is shown a hot water boiler 1 0' connect-ed supply and return' ipes 11 and'12 to a stove or range 13. The oiler is supported in any suitable mann g, as bymeans of a stand 14,'and has the usual drain outlet 15.v A IThe supply or fee-d pipe for .the boiler is indicated: by .the numeral 1G, and the het water is distributed for-.house use to apipe 17, but in carrying. out my invention I provide. the -top-po rtion of the boiler with an exit pipclS, preferably having a removable section -19 coupled thereto, as shownat 20.

Mounted on-theupper extremity of the pipe. section 19 is a 'substantially inverted' truste-conical valve casing 2l, the same being exteriorlv threaded as at 22 and of the same diameter as the exterlorly.threaded Reference is to 4be had to the accompany! SAFETY-varvn.'

Specification of Letters Patent'. .Patented 111.11'. 3.1. 1314; Application filed March 3. 1913. Serial No. 751,816. v I

upper end z-Sy of the'pipe sect-ion 19, ivherc- Y b v the parts may be coupled b v a collar 2l. Held wit-hin the valve' casing is a substantiallv h vperbola-lilte or couoidai sleeve 2. the saine being' of circnlar'cross section and having flaring ends. The lower flaredend of' the sleeve is extended outwardly. as

shown at 28, and held between the ends oi the pipe section 19 and the valve casing due to the clamping,engagement of said parts v by the coupling ring' o' collar 24tand the upper portion of the sleeve which'snugiy titsv the casingand produces a valve seat. The

passage tlnoueh-the sleeve mav be closedby a relatively light weightlnill valveQT which' normally seats on the sleeve, but

which may freely"movefupward in the cas-v ing under the pressure of the steam.

exact pressure at which the valve will open mav be regulated as desired by varying the weight of the valve, and it will bc obvious that since the valve casing' is of larger distem' may readil)1 escape around the latter. The upper extremitv of the valve casing is preferably exteriorllv threaded, as shown at.

QS, to serve' the purpose fof attaching' a drain pipe or the like '29 to discharge the steam exteriorly of the house.-

structed as part ofgthe boiler or sold as an attachment therefor. Means are also pro; vided to preventtotal or permanent dis 4placement of the valve from its seat, such The means preferablyconsisting of a spider cr transverse strip 230 in the casing 21 above the valve. lt is also obvious that the escape of the steam will not be impeded or obstructedmaterially when the valvfl engages the spider.

'llavingthus described mvinvention` what Ifclai'm'is:-

.1. A 'safety attachment for hot water boilers counnonlv used in comma-tion nillf stoves and ranges, vsaid boiler having an exit pipe leadirg centrally from the top portion thereof, comprising a substantially in vertcd {resto-conical valve casing carried by said pipe and forming a siibslantiall)v llO neck-like portion'enlzirged toward-'its upper` sure 'sa-idiiieansfc'omprisilig a`l frusto-'conical end, a. hyperbola-like-sleeve.having -ar lout-` valve 'casing carried by'saidpipe, a, concave 2owardly extending lower vend held` between sleeve llixedA therein and having' op'positely.

'the pipe and casing end foriningpa valve lflared'ends producing a'valve'seat at one eml 5 seat atits upper end, said ed'snuglytting'. -andfan attaching flange at'the other, a ball thefcising, anda relatively lightweight bell vz 1 -I f e 1i1ou nted`inf the casing' and normally Valve` coperating with .theseat to"auto lpositioned on-tli'e seat to close'the passa'ge 25 inet-icallyrelieve the'boilerofexcess'steam. through -the sleeve,` andniea-ns 'arrangedpressure and Aseryil'igto resist back pressilre- ,transversely of the casingto preventV p'ward 10 and forming a Water seal, the. interiorfifdif; [displacement of the'vvalvebevondjthe -cas?- :uneter ofzthe-casingbeingggreziter -thnthj- "ing.

diameter of the valve and thato the .sleeveV -In,i'testir'nony vwhere-of If'l'mve signed 30 being less than the dia-meter of the valve. name toftliisspecification in the presence of' 2. An attachment for hot Water boilersl two subscribing Witnessesl5 'of the class described, comprising'a'n exit HARRY STEINBERG. pipe leading fromtlie` top .portion-"ofthe, Witnesses: j if v 'l .-boiler, and means carried by thepip'e' to au. JE'LL'IEL S. Stima,

ANNms-Srnmenm.'

tomatically relieye the boiler 'of excess presi. 

